<template>
  <div class="login">
    <div class="form">
      <div class="title">
        智慧点餐平台
      </div>

      <el-form :model="formData" :rules="rules" ref="formRef">
        <el-form-item prop="account">
          <el-input v-model="formData.account" placeholder="请输入账号">
            <template #prefix>
              <el-icon class="el-input__icon">
                <UserFilled color="#fff" />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="formData.password" type="password" show-password placeholder="请输入密码">
            <template #prefix>
              <el-icon class="el-input__icon">
                <Lock color="#fff" />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" style="width: 100%" @click="login">立即登录</el-button>
        </el-form-item>

      </el-form>
    </div>
  </div>
</template>

<script setup>
import { reactive, onMounted, ref } from 'vue'
import { useRouter } from 'vue-router'
import { userStore } from '@/stores/userStore'

import { UserFilled, Lock } from '@element-plus/icons-vue'
import { checkLogin } from '@/api/account'
import { ElMessage } from 'element-plus'
const router = useRouter()

const store = userStore()

// 登录表单数据
const formData = reactive({
  account: '',
  password: ''
})

const formRef = ref(null);

//触发的校验事件函数
const validateAccount = (rule, value, callback) => {
  //rule :整个input的所有的规则  
  //value:当前input的值
  //callback:回调函数，如果校验通过，callback() ，  必须只要写一次验证通过
  //        校验不通过，callback(new Error('错误信息'))
  let reg = /^([a-z]|[0-9]){4,11}$/
  if (reg.test(value)) {
    callback()
  } else {
    callback(new Error('请输入正确的账号'))
  }

}
const validatePassword = (rule, value, callback) => {
  let reg = /^([a-z]|[0-9]){4,11}$/
  if (reg.test(value)) {
    callback()
  } else {
    callback(new Error('请输入正确的密码'))
  }
}

//校验规则
const rules = reactive({
  account: [
    { validator: validateAccount, trigger: 'blur' }
  ],
  password: [
    { validator: validatePassword, trigger: 'blur' }
  ]
})


// 调用层
const login = () => {
  // 触发表单的自定义验证 通过后才可调用接口
  formRef.value.validate(async (res) => {
    if (res) {
      let { code, msg, id, role, token } = await checkLogin(formData);
      if (code == 0) {
        //存用户登录基本数据到pinia 
        // store.changeUserInfo({id,role,token})
        sessionStorage.setItem('user', JSON.stringify({ id, role, token }))
        ElMessage.success(msg)
        router.push('/home')
      } else {
        ElMessage.error(msg)
      }


    }

  })




}





</script>

<style scoped lang="scss">
.login {
  width: 100%;
  height: 100%;
  background-color: #2d3a4b;
}

.form {
  width: 400px;
  height: 300px;

  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.title {
  width: 100%;
  height: 50px;
  color: #fff;
  font-size: 20px;
  text-align: center;
  line-height: 50px
}

:deep(.el-input__wrapper) {
  background-color: transparent;

}

:deep(.el-input__inner) {
  color: #fff;
}
</style>